code: def start_qsort():
      disable_keys()
      clear()
      show_text("Quicksort")
      qsort(s, 0, len(s) - 1)
      clear()
      show_text(instructions1)
      show_text(instructions2, line=1)
      enable_keys()
  
imports: from turtle import *
  import random
label_desc: Use image node_id 9 for calling a global function with example usage: start_qsort() without return types